Achternamen
| Achternaam | Aantal |
|---|---|
| Kooke | 4 |
| Kooken | 8 |
| Kool | 39 |
| Koolen | 145 |
| Koolhout | 2 |
| Koolman | 2 |
| Kooloos | 1 |
| Kools | 30 |
| Koolwijk | 2 |
| Koolwijk, van | 5 |
| Koolwijk, van de | 1 |
| Koomen | 3 |
| Koonen | 25 |
| Kooning, de | 1 |
| Koonings | 5 |
| Koop | 4 |
| Koopal | 1 |
| Kooper | 1 |
| Koopman | 36 |
| Koopmann | 1 |
| Koopmans | 34 |
| Koopmanschap | 1 |
| Koops | 12 |
| Kooremans | 1 |
| Koorenhof | 2 |